40-position board-to-board receptacle, 2.54 mm pitch
The 91618-420LF: It mounts surface-mount, accepts bottom or top entry, and includes a board lock for retention during reflow. The push-pull fastening mates without a latch.
Stack height and contact finish
The mated stacking height is 10.81 mm with a 0.275" (6.99 mm) insulation height.